Container/MeshNodePtr/Branch: front() & back()

Author: MorganCaron

modules/Container/MeshNetwork.mpp

@@ -264,6 +264,16 @@ export namespace CppUtils::Container
 				return std::unexpected{"Failed to lock weak pointer for branch. Node might have been deleted"sv};
 			}
 
+			[[nodiscard]] auto front() const -> std::expected<MeshNodePtr, std::string_view>
+			{
+				return (*this)[0];
+			}
+
+			[[nodiscard]] auto back() const -> std::expected<MeshNodePtr, std::string_view>
+			{
+				return (*this)[std::size(m_children) - 1];
+			}
+
 		private:
 			NodePtrType& m_self;
 			const Key& m_key;

tests/Container/MeshNetwork.mpp

@@ -574,5 +574,31 @@ export namespace CppUtils::UnitTest::Container::MeshNetwork
 				auto _ = invalidNode.at("Branch");
 			});
 		});
+
+		suite.addTest("Get first node", [&] {
+			auto root = StringMeshNodePtr::makeRoot("root");
+			auto child1 = StringMeshNodePtr::make("child1");
+			auto child2 = StringMeshNodePtr::make("child2");
+			root["Branch"] >> child1;
+			root["Branch"] >> child2;
+
+			auto childExpected = root["Branch"].front();
+
+			suite.expect(childExpected.has_value());
+			suite.expectEqual(childExpected.value().getValue().value(), "child1");
+		});
+
+		suite.addTest("Get last node", [&] {
+			auto root = StringMeshNodePtr::makeRoot("root");
+			auto child1 = StringMeshNodePtr::make("child1");
+			auto child2 = StringMeshNodePtr::make("child2");
+			root["Branch"] >> child1;
+			root["Branch"] >> child2;
+
+			auto childExpected = root["Branch"].back();
+
+			suite.expect(childExpected.has_value());
+			suite.expectEqual(childExpected.value().getValue().value(), "child2");
+		});
 	}};
 }